Hi all - looking for some advice on the best layout to wet vent a toilet. See diagram below for options 1 through 4. Assume 2" coming from a lav for the wet vent with a cleanout in the vertical part of vent. Also assume I can use the toilet as a cleanout. Questions:
- Do any of these *positively* not meet code (or would maybe cause a lot of discussion with the inspector)? E.g, some local code states wet vents can't pitch more than 1/4 to prevent turbulent flow problems, so would that rule out the option with the "rolled up" wye?
- Which might be the remaining option that has the least risk of becoming a problem? I.e., is there an option that you think is more or less likely to develop clogs, or harder to unclog the 2" part for?
And two related to the toilet, because I don't have a lot of room even with back-to-back fittings:
- Can I use a non-long street 90 for the toilet connection, or must I use a long sweep or closet bend?
- Is there a big disadvantage to use a long sweep 90 vs 2 45s in the horizontal turn?
- Do any of these *positively* not meet code (or would maybe cause a lot of discussion with the inspector)? E.g, some local code states wet vents can't pitch more than 1/4 to prevent turbulent flow problems, so would that rule out the option with the "rolled up" wye?
- Which might be the remaining option that has the least risk of becoming a problem? I.e., is there an option that you think is more or less likely to develop clogs, or harder to unclog the 2" part for?
And two related to the toilet, because I don't have a lot of room even with back-to-back fittings:
- Can I use a non-long street 90 for the toilet connection, or must I use a long sweep or closet bend?
- Is there a big disadvantage to use a long sweep 90 vs 2 45s in the horizontal turn?